View source for Converting a branch into category does not convert all descendants

= Old versions =

This question refers to older SuperMemos. Categories were replaced with [[concept]]s.

= Question =

Converting a branch into a category does not convert all the descendants into descendants of that category. If I check the descendants using Ctrl+Alt+P, they all still belong to the old category. Is there a fast way to convert all descendants into descendants of that category while (1) maintaining the branch structure and (2) applying the category template to all items in the branch?

= Hint = 

Probably the only way to move items to a category is '''Move to category''' (in Contents). This does not preserve the tree structure. This sounds like a useful idea for future versions, esp. that you are not the first to ask.

= Answer =